Add dt binding for the Intel Displayport receiver FPGA IP. It is a part of the DisplayPort Intel FPGA IP Core, and supports DisplayPort 1.4, HBR3 video capture and Multi-Stream Transport.
The user guide can be found here: https://www.intel.com/programmable/technical-pdfs/683273.pdf Signed-off-by: Paweł Anikiel <panik...@google.com> --- .../devicetree/bindings/media/intel,dprx.yaml | 172 ++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/intel,dprx.yaml diff --git a/Documentation/devicetree/bindings/media/intel,dprx.yaml b/Documentation/devicetree/bindings/media/intel,dprx.yaml new file mode 100644 index 000000000000..01bed858f746 --- /dev/null +++ b/Documentation/devicetree/bindings/media/intel,dprx.yaml @@ -0,0 +1,172 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/intel,dprx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Intel DisplayPort RX IP + +maintainers: + - Paweł Anikiel <panik...@google.com> + +description: | + The Intel Displayport RX IP is a part of the DisplayPort Intel FPGA IP + Core. It implements a DisplayPort 1.4 receiver capable of HBR3 video + capture and Multi-Stream Transport. + + The IP features a large number of configuration parameters, found at: + https://www.intel.com/content/www/us/en/docs/programmable/683273/23-3-20-0-1/sink-parameters.html + + The following parameters have to be enabled: + - Support DisplayPort sink + - Enable GPU control + The following parameters have to be set in the devicetree: + - RX maximum link rate (using link-frequencies) + - Maximum lane count (using data-lanes) + - Support MST (using multi-stream-support) + - Max stream count (inferred from the number of ports) + +properties: + compatible: + const: intel,dprx-20.0.1 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + description: MST virtual channel 0 or SST main link + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + + properties: + link-frequencies: true + + data-lanes: + minItems: 1 + maxItems: 4 + + multi-stream-support: true + + required: + - data-lanes + - link-frequencies + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: MST virtual channel 0 or SST main link + + port@2: + $ref: /schemas/graph.yaml#/properties/port + description: MST virtual channel 1 + + port@3: + $ref: /schemas/graph.yaml#/properties/port + description: MST virtual channel 2 + + port@4: + $ref: /schemas/graph.yaml#/properties/port + description: MST virtual channel 3 + + +required: + - compatible + - reg + - interrupts + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + dp-receiver@c0062000 { + compatible = "intel,dprx-20.0.1"; + reg = <0xc0062000 0x800>; + interrupt-parent = <&dprx_mst_irq>; + interrupts = <0 IRQ_TYPE_EDGE_RISING>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dprx_mst_in: endpoint { + remote-endpoint = <&dp_input_mst_0>; + data-lanes = <0 1 2 3>; + link-frequencies = /bits/ 64 <1620000000 2700000000 + 5400000000 8100000000>; + multi-stream-support; + }; + }; + + port@1 { + reg = <1>; + dprx_mst_0: endpoint { + remote-endpoint = <&video_mst0_0>; + }; + }; + + port@2 { + reg = <2>; + dprx_mst_1: endpoint { + remote-endpoint = <&video_mst1_0>; + }; + }; + + port@3 { + reg = <3>; + dprx_mst_2: endpoint { + remote-endpoint = <&video_mst2_0>; + }; + }; + + port@4 { + reg = <4>; + dprx_mst_3: endpoint { + remote-endpoint = <&video_mst3_0>; + }; + }; + }; + }; + + - | + dp-receiver@c0064000 { + compatible = "intel,dprx-20.0.1"; + reg = <0xc0064000 0x800>; + interrupt-parent = <&dprx_sst_irq>; + interrupts = <0 IRQ_TYPE_EDGE_RISING>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dprx_sst_in: endpoint { + remote-endpoint = <&dp_input_sst_0>; + data-lanes = <0 1 2 3>; + link-frequencies = /bits/ 64 <1620000000 2700000000 + 5400000000 8100000000>; + }; + }; + + port@1 { + reg = <1>; + dprx_sst_0: endpoint { + remote-endpoint = <&video_sst_0>; + }; + }; + }; + }; -- 2.45.0.rc1.225.g2a3ae87e7f-goog
